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68806931763 = 340956077369
BaseRepresentation
bin100000000010100110…
…1100111010100110011
320120121021101021221010
41000011031213110303
52111404033304023
651335351202003
74654046161413
oct1000515472463
9216537337833
1068806931763
11271a97a0269
1211403376303
13664720c30b
14348a3ac643
151bca9e4093
hex1005367533

68806931763 has 8 divisors (see below), whose sum is σ = 91966886800. Its totient is φ = 45759132288.

The previous prime is 68806931749. The next prime is 68806931771. The reversal of 68806931763 is 36713960886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68806931763 - 24 = 68806931747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68806931723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28037458 + ... + 28039911.

It is an arithmetic number, because the mean of its divisors is an integer number (11495860850).

Almost surely, 268806931763 is an apocalyptic number.

68806931763 is a deficient number, since it is larger than the sum of its proper divisors (23159955037).

68806931763 is a wasteful number, since it uses less digits than its factorization.

68806931763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56077781.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 68806931763 in words is "sixty-eight billion, eight hundred six million, nine hundred thirty-one thousand, seven hundred sixty-three".

Divisors: 1 3 409 1227 56077369 168232107 22935643921 68806931763